Beilstein J. Org. Chem.2019,15, 1096–1106, doi:10.3762/bjoc.15.106
Abstract Four benzothiazoliumcrownether-containingstyryldyes were prepared through an optimized synthetic procedure. Two of the dyes (4b and 4d) having substituents in the 5-position of the benzothiazole ring are newly synthesized compounds. They demonstrated a higher degree of trans–cis
-crown-5 ether; benzothiazoliumcrownether-containingstyryldyes; E/Z photoisomerization; molecular solar thermal system; Introduction
Molecular photoswitches permanently attract considerable interest because they hold potential for application in molecular electronic and photonic devices [1][2][3][4
and trans-4b–Ba complex). These results correspond to the experimentally observed gradual increase in the intensity of the absorption maximum upon cis-to-trans reversion.
Conclusion
Four benzothiazoliumcrownether-containingstyryldyes (two known and two novel compounds) were synthesized through an
PDF
Graphical Abstract
Scheme 1:
Quaternization of 2-methylbenzothiazoles with alkane sultones.